[ 1784.440183] br0: port 1(dummy0) entered blocking state
[ 1784.440232] br0: port 1(dummy0) entered disabled state
[ 1784.440265] dummy0: entered allmulticast mode
[ 1784.440319] dummy0: entered promiscuous mode
[ 1784.443130] br0: port 1(dummy0) entered blocking state
[ 1784.443192] br0: port 1(dummy0) entered forwarding state
[ 1784.643706] dummy0: left allmulticast mode
[ 1784.643740] dummy0: left promiscuous mode
[ 1784.643770] br0: port 1(dummy0) entered disabled state